CN109179869A - The sewage treatment process and autocontrol operation method of no additional carbon removal total nitrogen - Google Patents
The sewage treatment process and autocontrol operation method of no additional carbon removal total nitrogen Download PDFInfo
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- CN109179869A CN109179869A CN201811091314.1A CN201811091314A CN109179869A CN 109179869 A CN109179869 A CN 109179869A CN 201811091314 A CN201811091314 A CN 201811091314A CN 109179869 A CN109179869 A CN 109179869A
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- pond
- mbr
- water
- reflux
- total nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000010865 sewage Substances 0.000 title claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000945 filler Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 13
- 241000894006 Bacteria Species 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 8
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000010992 reflux Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 6
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 241000108664 Nitrobacteria Species 0.000 claims description 3
- 238000005276 aerator Methods 0.000 claims description 3
- 238000004176 ammonification Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000001580 bacterial effect Effects 0.000 claims description 3
- 125000001477 organic nitrogen group Chemical group 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 239000002352 surface water Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 206010002660 Anoxia Diseases 0.000 claims description 2
- 241000976983 Anoxia Species 0.000 claims description 2
- 206010021143 Hypoxia Diseases 0.000 claims description 2
- 230000000274 adsorptive effect Effects 0.000 claims description 2
- 230000007953 anoxia Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000006396 nitration reaction Methods 0.000 claims description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 230000036632 reaction speed Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 239000000919 ceramic Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000001235 sensitizing effect Effects 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002969 morbid Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
- C02F2209/008—Processes using a programmable logic controller [PLC] comprising telecommunication features, e.g. modems or antennas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention provides a kind of sewage treatment process of no additional carbon removal total nitrogen, the technique is used for the removal of sewage treatment total nitrogen, the technique is the progress nitrification and denitrification effect in processing unit, the technique reaches effluent index COD:20-30mg/L, BOD:4-6mg/L, SS≤1mg/L, TP:0.2-0.3mg/L, NH3N:1-3mg/L, TN:9-10mg/L by six steps, this technique removes 1 TN and needs 1.5-2 BOD, Chinese effluent to river, wetland or pipe network；Effect of the invention is that carbon source is distributed by the technique using activated sludge+MBBR+MBR method and multipoint water feeding, it puts into filler and increases response area, and the sludge age of 180d or more, advantage nitrifier and denitrifying bacterium can be preferably enriched with, nitrification and denitrification effect at this time, which synchronizes, is removed total nitrogen, and it removes 1 TN and needs 1.5-2 BOD, the TN for removing 1mg/L needs the BOD of 1.5-2mg/L, substantially reduce the consumption to carbon source, so that can preferably remove total nitrogen in addition water inlet does not add carbon source in the case that.The present invention provides a kind of method of automatic control equipment operation, and this method is to start equipment according to working condition requirement by the elements such as liquid level, motor-driven valve, flow, mud degree, pressure, time sensing or PLC, run, adjusting, stopping working.
Description
Technical field
The present invention relates to a kind of sewage treatment process fields, more particularly, to a kind of sewage of no additional carbon removal total nitrogen
The method for the treatment of process and automatic control equipment operation, makes effluent quality hold " urban wastewater treatment firm pollutant emission standard "
(GB18918-2002) primary standard A standard, and part reaches " water environment quality standard " (GB3838-2002) IV class
The method field of sewage treatment process and the automatic control equipment operation of (TN≤10) standard.
Background technique
It is mentioned in " the water prevention and cure of pollution action plan " that State Council issues, to select having prominent influence to quality of water environment
The indexs such as total nitrogen, total phosphorus, basin, regional pollution object prediction emission the binding indicator system are included in research, and are clearly wanted
It asks, the river and coastal ground level of remittance eutrophication lake and reservoir and the above city should implement total nitrogen emission control, and total phosphorus control also mentions
Schedule has been gone up, control will have been carried out in part basin, region.
" urban wastewater treatment firm pollutant emission standard " exposure draft of former State Bureau of Environmental Protection's publication, is put forward for the first time spy
Other emission limit (totally want with " water environment quality standard " (GB3838-2002) IV class water quality by special emission limit
Suitable (except total nitrogen) is asked, can satisfy demand of the ecological environment sensitizing range to sewage treatment plant's discharge control.Meanwhile ammonia nitrogen and
Total nitrogen index proposes to meet the limit value of water eutrophication demand for control.It this time revises while proposing for sensitizing range
Applicable special emission limit is, it is specified that the sewage discharge of ecological environment sensitizing range need to be improved to surface water IV class water quality requirement.It is special
Processing effluent COD concentration is required to be not higher than 30mg/L in other emission limit, SS concentration is not higher than 5mg/L.Most domestic as a result,
The existing process flow of sewage treatment plant can no longer meet new water quality requirement, it is necessary to optimize transformation and upgrade.
With the shortage of water resource and the aggravation of environmental pollution, the effluent index of existing sewage treatment plant is stringenter, right
Water outlet total nitrogen has more specific requirement.This carbon source for just needing to have comparison sufficient in sewage, to be gone by nitration denitrification
Except total nitrogen.1 TN is removed in traditional handicraft and needs 4 BOD, i.e. the TN of removal 1mg/L needs the BOD of 4mg/L, so traditional work
Carbon source can be largely consumed during removing total nitrogen in skill.Many sewage treatment plants face the problem of carbon source deficiency now, are
Make to be discharged total nitrogen up to standard, it has to artificially add carbon source.Currently, solving the problems, such as carbon source deficiency, additional carbon is mainly considered
(such as methanol, ethyl alcohol, acetic acid and glucose), but the processing cost of sewage treatment plant can be greatly increased in this way.Studies have shown that
It is equivalent to as many as 70% of water factory's operational management cost as the cost of carbon source using methanol, or will be enriched in biodegradable having
The industrial wastewater of machine object is added in municipal sewage, then will increase additional freight and other expenditure in this way.
Currently, municipal sewage treatment utility automation level is continuously improved, but small towns, backwoodsman sewage treatment are set
Standby, the horizontal lag of utility automation, administrative staff cannot arrive hilllock in time, and operation information cannot obtain in time, and operation goes wrong
It cannot handle in time, equipment is even in morbid state, in this way, there are risk of environmental pollution loopholes.
Summary of the invention
The object of the present invention is to provide the sewage treatment process and automatic control equipment of a kind of no additional carbon removal total nitrogen
The method of operation, in favor of solve current sewage treatment occur carbon source is insufficient, denitrogenation dephosphorizing treatment effect it is unstable it is not up to standard with
And add external carbon source removal total nitrogen it is at high cost it is low with automatization level, duty personnel is more, running cost is high, equipment fault cannot
The problems such as obtaining in time.
The technical solution adopted by the present invention is that providing a kind of sewage treatment process of no additional carbon removal total nitrogen, the technique
For the removal of total nitrogen in sewage treatment, and effluent quality executes " urban wastewater treatment firm pollutant emission standard "
(GB18918-2002) primary standard A standard, and part reaches " water environment quality standard " (GB3838-2002) IV class
(TN≤10) standard, the technique be sequentially connected anoxic pond, anaerobic pond, pre- aerobic tank, the pond MBR, sterilize and clear water reserviors with
And nitrification and denitrification, the anoxic pond, anaerobic pond, pre- aerobic tank, the pond MBR are carried out in the processing unit of sludge-tank
Sludge age be 180d or more;The method of automatic control equipment operation is by electric control element or PLC, motor-driven valve, mud degree meter, liquid
Position meter, flowmeter, pressure sensor etc. start, run, adjust, stop working to realize equipment, and online information is passing through PLC receipts
Collection arranges emitted device and is transmitted to owner；Carbon source is distributed by the technique using activated sludge+MBBR+MBR method and multipoint water feeding
Mode;The technique and method may be implemented in ground, underground, in semi-underground sewage disposal process；It is characterized in that: the technique and side
Method includes the following steps and process:
A: multiple spot is distributed carbon source so that nitrification and the denitrification synchronous progress in each pond, using multiple spot into
Water inlet sewage is divided into four part 65%-75% and enters anoxic pond by water mode, and 15%-25% enters anaerobic pond, and it is pre- good that 5%-7% enters
Oxygen pond, remaining 3%-5% enter the pond MBR;
B: anoxic pond), anaerobic pond, launch filler in pre- aerobic tank and increase reaction specific surface area, accelerate bacterial reaction speed;
C: the water inlet of 65%-75% and the mixed liquor of pre- aerobic tank reflux carry out hybrid reaction in anoxic pond, and hydraulic detention time is
3-4h will be from pre- good in the case where filler increases bacterium contact specific surface area and anoxia condition by the denitrification of denitrifying bacterium
The nitrate transformation that the reflux of oxygen pond is brought into overflows into atmosphere at nitrogen;
D: after anoxic pond is handled, the mixed liquor that sewage enters water inlet and the reflux of the pond MBR in anaerobic pond with 15% ~ 25% is carried out
Hybrid reaction is increased in filler bacterium contact specific surface area under anaerobic condition, and the nitrate that reflux is brought into from the pond MBR is in anti-nitre
It is converted to nitrogen under the denitrification of change bacterium to overflow into atmosphere, the residence time of anaerobism section is 3 ~ 4h;
E: after anaerobic pond is handled, sewage enters in pre- aerobic tank, the water inlet hybrid reaction with 5%-7%, in pre- aerobic tank,
By means of the increased specific surface area of filler more nitrobacteria by sewage ammonia nitrogen and organic nitrogen ammonification at ammonia nitrogen, pass through nitre
The nitrification for changing bacterium, by mineralized nitrogen at nitrate, the residence time of pre- aerobic section is 2 ~ 3h, the mixed liquor in pre- aerobic tank
Be back to anoxic pond by the reflux unit being mounted in pre- aerobic tank, reflux ratio is 100% ~ 200%, this reflux be it is normally opened, return
It flows device and passes through valve regulated regurgitant volume;Chemical dephosphorization device is added at this stage, carries out dephosphorization, so that water outlet total phosphorus is up to standard;
F: by pre- aerobic tank processing after, sewage enters in the pond MBR, the water inlet hybrid reaction with 3%-5%, the pond MBR with MBR film
Component connection produces under the condition of negative pressure that water pump generates, and the water in the mixed liquor of hybrid reaction is completed to be separated by solid-liquid separation by MBR film,
Sludge sinks, and mixed liquor is back in anaerobic pond by reflux unit, and reflux ratio is 100% ~ 200%, this reflux is normally opened, reflux
By valve regulated regurgitant volume, excess sludge adjusts control through electric mud valve by pipeline and enters sludge-tank device;
G: disinfection and clear water reserviors are then gone through into the water outlet of the pond MBR is crossed, residence time 2h, effluent quality executes " cities and towns at this time
Wastewater Treatment discharge standard " (GB18918-2002) primary standard A standard, and part reaches " surface water environment matter
Amount standard (GB3838-2002) IV class (TN≤10) standard, effluent index COD:20-30mg/L, BOD:4-6mg/L, SS≤
1mg/L, TP:0.2-0.3mg/L, NH3N:1-3mg/L, TN:9-10mg/L, this technique remove 1 TN and need 1.5-2
BOD, Chinese effluent to river, wetland or pipe network reuse；
H: the method for automatic control equipment operation is: intake pump, production water pump, blower are controlled by liquidometer and time PLC, sludge row
It puts by mud degree meter, PLC, electric mud valve control, each data collect warp by mud degree meter, liquidometer, flowmeter, pressure sensor
Issue a command to intake pump after PLC processing, produce water pump, blower, electrically operated valve etc., the emitted device of information is sent to owner, work
Make as follows:
A. water pump is produced, work 8min, stops 2min, is controlled by the time relay in PLC；
B. blower works under the conditions of integral device meets and operates normally with the pond MBR ordinary water level；
C. dephosphorization apparatus metering Pumps & Fans synchronous working；
D. produce water pump when the suction and pumping of MBR water are to lower liquid level, blower stops working, produce water when MBR water rises to upper liquid level
Pump, blower are devoted oneself to work；
E. when adjusting water to lower liquid level, equipment is all electrically to stop working；When adjusting water arrival above liquid level, intake pump
It devotes oneself to work, it is other electrically to devote oneself to work under the conditions of satisfaction；
F. all online electrically in PLC control when adsorptive pressure sensor negative pressure reaches setting upper limit value and flowmeter lower limit value
It stops working under system, dosing cleaning device is devoted oneself to work, and is cleaned to MBR；When solution reaches lower liquid in dosing cleaning device
When position, dosing cleaning pump stops working, and restores normal sewage treatment operation；
G. when mud degree meter mud degree reaches setting value, electric mud valve spoil disposal is opened by PLC, reaches mud degree and sets lower limits value
When, close electric mud valve；
H. in the case where equipment has electric situation, the data such as equipment operation, stopping, information are sent by PLC, emitter, communication network
To owner.
Effect 1 of the invention is to launch filler by using multipoint water feeding to be distributed carbon source in the technique and increase reaction ratio
Surface area accelerates the features such as sludge age of bacterial reaction breeding and 180d or more, can preferably be enriched with advantage nitrifier and denitrification
Bacterium, nitrification is synchronous with denitrification at this time carries out, and can preferably remove total nitrogen, and remove total nitrogen by this method
When, it removes 1 TN and needs 1.5-2 BOD, is i.e. the TN of removal 1mg/L needs the BOD of 1.5-2mg/L, in the mistake of removal total nitrogen
Cheng Zhong substantially reduces the consumption to carbon source, so that water inlet is insufficient in carbon source and in the case where in addition not adding carbon source, it can be more
Good removal total nitrogen.
Effect 2 of the invention is that this method passes through electric control element or PLC, motor-driven valve, mud degree meter, liquidometer, flowmeter, pressure
Force snesor etc. starts, runs, adjusts, stops working to realize equipment, and online information is compiling emitted dress by PLC
It sets and is transmitted to owner, to realize that sewage disposal device fully automatic working is run.
Detailed description of the invention
Fig. 1 is sewage treatment process schematic diagram of the present invention without additional carbon removal total nitrogen；
Fig. 2 is the method control schematic diagram of automatic control equipment operation of the present invention.
In figure: 1 is anoxic pond, and 2 be anaerobic pond, and 3 be pre- aerobic tank, and 4 be the pond MBR, and 5 be to sterilize simultaneous clear water reserviors, and 6 be sludge
Pond, 7 be intake pump, and 8,10 be reflux unit, and 9 be micro-hole aerator, and 11 be filler, and 12 be MBR membrane module, and 13,14 be valve,
15 be valve, and 16 be dosing cleaning device, and 17 be to produce water pump, and 18 be water outlet, and 19 be dephosphorization apparatus, and 20 be PLC, and 21 be electronic row
Slurry valve, 22,27 be flowmeter, and 23,24 be liquidometer, and 25 be emitter, and 26 be pressure sensor, and 28 be mud degree meter.
Claims (6)
1. a kind of sewage treatment process of no additional carbon removal total nitrogen, removal of the technique for total nitrogen in sewage treatment, and
And effluent quality executes " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) primary standard A standard, and portion
Divide and reach " water environment quality standard " (GB3838-2002) IV class (TN≤10) standard, which is sequentially connected
It is nitrified in the processing unit of anoxic pond 1, anaerobic pond 2, pre- aerobic tank 3, the pond MBR 4, disinfection and clear water reserviors 5 and sludge-tank 6
Effect and denitrification, the anoxic pond 1, anaerobic pond 2 add filler 11 in pre- aerobic tank 3 and increase specific surface area and accelerate nitre
Change effect and denitrification, the anoxic pond 1, anaerobic pond 2, pre- aerobic 3, MBR 4 sludge age are 180d or more;Automatic control
The method of control equipment operation is by electric control element or PLC 20, motor-driven valve 21, mud degree meter 28, liquidometer 23, liquidometer 24, stream
Meter 22, flowmeter 27, pressure sensor 26 etc. start, run, adjust, stop working to realize equipment, and online information is logical
It crosses PLC and compiles emitted device 25 and be sent to owner；The technique uses activated sludge+MBBR+MBR method and multipoint water feeding will
The mode of carbon source distribution;The technique and method may be implemented in ground, underground, in semi-underground sewage disposal process；It is characterized in that:
The technique and method include the following steps and process:
A: multiple spot is distributed carbon source so that nitrification and the denitrification synchronous progress in each pond, using multiple spot into
Water inlet sewage is divided into four part 65%-75% and enters anoxic pond 1 by water mode, and 15%-25% enters anaerobic pond 2, and 5%-7% enters pre-
Aerobic tank 3, remaining 3%-5% enter the pond MBR 4;
B: anoxic pond 1, anaerobic pond 2 launch filler 11 in pre- aerobic tank 3 and increase reaction specific surface area, accelerate bacterial reaction speed;
C: the water inlet of 65%-75% and the mixed liquor of pre- aerobic tank 3 reflux carry out hybrid reaction, hydraulic detention time in anoxic pond 1
For 3-4h, 11 bacterium of filler contact specific surface area increase and anoxia condition under will be from pre- by the denitrification of denitrifying bacterium
The nitrate transformation that the reflux of aerobic tank 3 is brought into overflows into atmosphere at nitrogen;
D: after the processing of anoxic pond 1, sewage enters the mixed liquor of water inlet and the reflux of the pond MBR 4 in anaerobic pond 2 with 15%-25%
Hybrid reaction is carried out, in the nitric acid that 11 bacterium of filler contact specific surface area is increased under anaerobic condition, reflux is brought into from the pond MBR 4
Salt is converted to nitrogen under the denitrification of denitrifying bacterium and overflows into atmosphere, and the residence time of anaerobism section is 3-4h;
E: after the processing of anaerobic pond 2, sewage enters in pre- aerobic tank 3, the water inlet hybrid reaction with 5%-7%, in pre- aerobic tank 3
In, by means of the increased specific surface area of filler 11 more nitrobacteria by sewage ammonia nitrogen and organic nitrogen ammonification at ammonia nitrogen,
By the nitrification of nitrifier, by mineralized nitrogen at nitrate, the residence time of pre- aerobic section is 2-3h, in pre- aerobic tank 3
Mixed liquor anoxic pond 1 is back to by the reflux unit 8 being mounted in pre- aerobic tank, reflux ratio 100%-200%, this reflux
To be normally opened, reflux unit 8 adjusts regurgitant volume by valve 13;Chemical dephosphorization device 19 is added at this stage, carries out dephosphorization, so that
It is up to standard to be discharged total phosphorus;
F: by pre- aerobic tank 3 processing after, sewage enters in the pond MBR 4, the water inlet hybrid reaction with 3%-5%, the pond MBR 4 with
What MBR membrane module 12 connected produces under the condition of negative pressure that water pump 17 generates, and the water in the mixed liquor of hybrid reaction is completed by MBR film
It is separated by solid-liquid separation, sludge sinks, and mixed liquor is back in anaerobic pond 2 by reflux unit 10, reflux ratio 100%-200%, this time
It is normally opened for flowing, and reflux unit 10 adjusts regurgitant volume by valve 14, and excess sludge is controlled by pipeline through the adjusting of electric mud valve 21
System enters sludge-tank 6;
G: disinfection and clear water reserviors 5 are then gone through into the water outlet of the pond MBR 4 is crossed, residence time 2h, effluent quality executes " city at this time
Town Wastewater Treatment discharge standard " (GB18918-2002) primary standard A standard, and part reaches " surface water environment
Quality standard " (GB3838-2002) IV class (TN≤10) standard, effluent index COD:20-30mg/L, BOD:4-6mg/L,
SS≤1mg/L, TP:0.2-0.3mg/L, NH3N:1-3mg/L, TN:9-10mg/L, this technique remove 1 TN and need 1.5-
2 BOD, water outlet 18 are emitted into river, wetland or pipe network reuse；
H: automatic control equipment operation method be: intake pump 7, produce water pump 17, blower 15 by 23 liquidometer 24 of liquidometer and when
Between PLC 20 control, mud discharging controls by mud degree meter 30, PLC 20, electronic spoil disposal 21, and each data are by mud degree meter 30, liquidometer
23, liquidometer 24, flowmeter 22, flowmeter 27, pressure sensor 26 collect through PLC 20 processing after issue a command to intake pump 7,
Water pump 17, blower 15, electronic spoil disposal 21, ultraviolet light or dosing sterilizing equipment decontaminating apparatus 5 etc. are produced, the emitted device 25 of information is sent to industry
Main, work is as follows:
A. water pump 17 is produced, work 8min, stops 2min, is controlled by the time relay in PLC 20；
B. blower 15 work under the conditions of integral device meets and operates normally with 4 ordinary water level of the pond MBR；
C. dephosphorization apparatus 19 measures Pumps & Fans 15 and works asynchronously；
D. produce water pump 17 when the 4 water suction and pumping of the pond MBR are to lower liquid level 24, blower 15 stops working, be raised to upper liquid when the pond MBR 4 is waterborne
Water pump 17 is produced when position 24, blower 15 is devoted oneself to work；
E. when adjusting water to lower liquid level 23, equipment is all electrically to stop working；When adjusting water arrival above liquid level 23, into
Water pump 7 is devoted oneself to work, other electrically to devote oneself to work under the conditions of satisfaction；
F. all electrically to exist online when 26 negative pressure of adsorptive pressure sensor reaches setting upper limit value and 27 lower limit value of flowmeter
PLC 20 stops working under controlling, and dosing cleaning device 16 is devoted oneself to work, and is cleaned to MBR；When in dosing cleaning device 16
When solution reaches lower liquid level, dosing cleaning device 16 stops working, and restores normal sewage treatment operation；
G. when 28 mud degree of mud degree meter reaches setting value, 21 spoil disposal of electric mud valve is opened by PLC 20, reaches the setting of mud degree
When lower limits value, electric mud valve 21 is closed；
H. in the case where equipment has electric situation, the data such as equipment operation, stopping, information pass through PLC 20, emitter 25, communication network
It is sent to owner.
2. the sewage treatment process of no additional carbon removal total nitrogen according to claim 1, it is characterized in that: anoxic pond 1,
The filler launched in anaerobic pond 2, pre- aerobic tank 3 is composite filling, elastic filler, floating stuffing, a kind of in semi soft packing, but
It is limited to such filler.
3. the sewage treatment process of no additional carbon removal total nitrogen according to claim 1, it is characterized in that: step D and
Reflux in step E is mixed liquor reflux, and reflux type uses stripping reflux mode or reflux pump reflux type.
4. the sewage treatment process of no additional carbon removal total nitrogen according to claim 1, it is characterized in that: pre- aerobic tank
3 bottom of pond are equipped with micro-hole aerator 9;Dissolved oxygen control is discharged in 1.0-1.5mg/L.
5. the sewage treatment process of no additional carbon removal total nitrogen according to claim 1, it is characterized in that: the pond MBR 4 is adopted
It is aerobic MBR, bottom of pond is equipped with micro-hole aerator 9, while mixed liquor is separated by solid-liquid separation, also can be carried out biological nitration work
With, nitrobacteria by sewage ammonia nitrogen and organic nitrogen ammonification at ammonia nitrogen, by the nitrification of nitrifier, by mineralized nitrogen at
Nitrate, residence time 3-4h；The pond MBR 4 is not limited to plate membrane, and hollow membrane, ceramic membrane etc. can be used, can external be more than
Filter.
6. the method for automatic control equipment operation according to claim 1, it is characterized in that: signal teletransmission is moved using wireless
Dynamic network or cable network, or wireless and wired hybrid network.
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